Hello. You did not show the chart to which the question refers, which makes it impossible for that question to be answered accurately. However, I will try to help you in the best possible way.
Context clue is the term used to refer to the ability that the context of a complete sentence has to show the meaning of a word that the reader does not know. In this case, to answer your question you must, observe the sentences shown in the chart, identify which unknown word you did not need to look for the meaning because you understood, through the context of the sentence, what that word means.